The spotting can be caused by dripping toilet bowl cleaners, which can etch the marble surface. As of this writing there are no sealers that will prevent acid etching. I would suggest purchasing a non-acidic bathroom bowl cleaner, available at most janitorial supply stores.
Research is currently being conducted in the hope to find a sealer that will prevent acid etching of marble surfaces. Keep a close eye in the trade journals for these products.
Article ID: 632
Created: January 21, 2022
Last Updated: January 21, 2022
Author: Pam Freitag
Online URL: https://sr-manual.com/kb/article/we-have-a-marble-bathroom-floor-and-keep-getting-spots-around-the-toilet-is-there-any-sealer-we-can-place-on-the-marble-to-prevent-this-spotting-632.html